GBA roms play like crap because it is only using the internal memory. I see in the console that it tried to allocate like 16 megs of ram and cannot

1, do NOT use MG to play GBA games. PocketGBA is *far* better. Please read my roundup of GBA emulators if you want to know why.

2, in the latest version of PocketGBA, you can play ROM's up to 32 Mbytes. If you really have that much memory (that is, your PDA is not a WM5 one like the x51v), you won't have problems playing big cartridges.

3, you can't convert flash ROM into dynamic RAM.

Microsoft MVP - Mobile Devices, 2006, 2007. See my PPC & SP blog HERE.